components/sidebar.js

class CustomSidebar extends HTMLElement {
    connectedCallback() {
        this.attachShadow({ mode: 'open' });
        this.shadowRoot.innerHTML = `
            <style>
                @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
                * { font-family: 'Inter', sans-serif; }
                .sidebar {
                width: 280px;
background: rgba(17, 24, 39, 0.95);
                    backdrop-filter: blur(20px);
                    -webkit-backdrop-filter: blur(20px);
                    border-right: 1px solid rgba(255, 255, 255, 0.1);
                    padding: 1.5rem 0;
                    overflow-y: auto;
                    height: 100vh;
                    position: fixed;
                    left: 0;
                    top: 64px;
                    z-index: 40;
                    transition: transform 0.3s ease;
                }
                
                .nav-section {
                    margin-bottom: 2rem;
                }
                
                .nav-title {
                    font-size: 0.75rem;
                    font-weight: 600;
                    color: #71717a;
                    text-transform: uppercase;
                    letter-spacing: 0.05em;
                    padding: 0 1.5rem;
                    margin-bottom: 0.75rem;
                }
                
                .nav-item {
                    display: flex;
                    align-items: center;
                    gap: 0.75rem;
                    padding: 0.875rem 1.5rem;
                    color: #d1d5db;
                    text-decoration: none;
                    transition: all 0.2s ease;
                    position: relative;
                    cursor: pointer;
                    border-radius: 0 12px 12px 0;
                    margin-right: 0.75rem;
                }
                
                .nav-item:hover {
                    background: rgba(255, 255, 255, 0.08);
                    color: #ffffff;
                }
                
                .nav-item.active {
                    background: rgba(255, 255, 255, 0.12);
                    color: #ffffff;
                }
                
                .nav-item.active::before {
                    content: '';
                    position: absolute;
                    left: 0;
                    top: 50%;
                    transform: translateY(-50%);
                    bottom: auto;
                    width: 3px;
                    height: 24px;
                    background: linear-gradient(135deg, #ffffff 0%, #9ca3af 100%);
                    border-radius: 0 3px 3px 0;
                }
                
                .nav-icon {
                    width: 20px;
                    height: 20px;
                    transition: transform 0.2s ease;
                }
                
                .nav-item:hover .nav-icon {
                    transform: scale(1.1);
                }
                
                .new-chat-btn {
                    margin: 0 1.5rem 1.5rem;
                    padding: 0.875rem 1.5rem;
                    background: linear-gradient(135deg, #ffffff 0%, #9ca3af 100%);
                    color: #111827;
                    border-radius: 12px;
                    font-weight: 600;
                    font-size: 0.9375rem;
                    text-align: center;
                    cursor: pointer;
                    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
                    border: none;
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    gap: 0.625rem;
                    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
                }
                
                .new-chat-btn:hover {
                    transform: translateY(-2px) scale(1.02);
                    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.25);
                }
                
                .new-chat-btn:active {
                    transform: translateY(0) scale(0.98);
                }
                
                .chat-history {
                    max-height: 280px;
                    overflow-y: auto;
                    margin-bottom: 1rem;
                    padding-right: 0.5rem;
                }
                
                .chat-history::-webkit-scrollbar {
                    width: 4px;
                }
                
                .chat-history::-webkit-scrollbar-track {
                    background: transparent;
                }
                
                .chat-history::-webkit-scrollbar-thumb {
                    background: #4b5563;
                    border-radius: 2px;
                }
                
                .history-item {
                    padding: 0.625rem 1.5rem;
                    color: #9ca3af;
                    font-size: 0.875rem;
                    cursor: pointer;
                    transition: all 0.2s ease;
                    border-radius: 0 8px 8px 0;
                    margin-right: 0.75rem;
                    line-height: 1.4;
                    display: flex;
                    align-items: center;
                    gap: 0.5rem;
                }
                
                .history-item:hover {
                    color: #ffffff;
                    background: rgba(255, 255, 255, 0.06);
                    padding-left: 2rem;
                }
                
                .history-icon {
                    width: 16px;
                    height: 16px;
                    opacity: 0.6;
                }
                
                .divider {
                    height: 1px;
                    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
                    margin: 1.5rem 1.5rem 1rem;
                }
                
                .account-section {
                    padding: 1rem 1.5rem;
                    background: rgba(255, 255, 255, 0.04);
                    border-radius: 12px;
                    margin: 0 1.5rem;
                    display: flex;
                    align-items: center;
                    gap: 0.75rem;
                    cursor: pointer;
                    transition: all 0.2s ease;
                }
                
                .account-section:hover {
                    background: rgba(255, 255, 255, 0.08);
                }
                
                .avatar {
                    width: 36px;
                    height: 36px;
                    border-radius: 50%;
                    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    color: white;
                    font-weight: 600;
                    font-size: 0.875rem;
                }
                
                .account-info {
                    flex: 1;
                }
                
                .account-name {
                    color: #ffffff;
                    font-weight: 500;
                    font-size: 0.875rem;
                    margin-bottom: 0.125rem;
                }
                
                .account-plan {
                    color: #9ca3af;
                    font-size: 0.75rem;
                }
                
                .badge {
                    background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
                    color: #ffffff;
                    padding: 0.25rem 0.625rem;
                    border-radius: 6px;
                    font-size: 0.625rem;
                    font-weight: 600;
                    text-transform: uppercase;
                    letter-spacing: 0.05em;
                }
                
                @media (max-width: 768px) {
                    .sidebar {
                        transform: translateX(-100%);
                    }
                    
                    .sidebar.active {
                        transform: translateX(0);
                    }
                }
            </style>
            
            <nav class="sidebar">
                <button onclick="startNewChat()" class="new-chat-btn">
                    <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2.5">
                        <path d="M12 5v14m-7-7h14"/>
                    </svg>
                    New Chat
                </button>
                <div class="nav-section">
                    <div class="nav-title">Recent Chats</div>
                    <div class="chat-history" id="recentChats">
                        <div class="history-item">
                            <svg class="history-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
                            </svg>
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                        </div>
                        <div class="history-item">
                            <svg class="history-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
                            </svg>
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                        </div>
                        <div class="history-item">
                            <svg class="history-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
                            </svg>
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                        </div>
                        <div class="history-item">
                            <svg class="history-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
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                        </div>
                        <div class="history-item">
                            <svg class="history-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                                <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
                            </svg>
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                        </div>
                    </div>
                </div>
<div class="divider"></div>
                
                <div class="nav-section">
                    <div class="nav-title">Araçlar</div>
                    <a href="/" class="nav-item">
                        <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                            <path d="M3 9l9-7 9 7v11a2 2 0 01-2 2H5a2 2 0 01-2-2z"/>
                            <path d="M9 22V12h6v10"/>
                        </svg>
                        Home
                    </a>
                    <a href="/chat" class="nav-item active">
                        <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                            <path d="M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z"/>
                        </svg>
                        Chat
                    </a>
                    <a href="/files" class="nav-item">
                        <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                            <path d="M13 2H6a2 2 0 00-2 2v16a2 2 0 002 2h12a2 2 0 002-2V9z"/>
                            <path d="M13 2v7h7"/>
                        </svg>
                        My Files
                    </a>
                    <a href="/settings" class="nav-item">
                        <svg class="nav-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
                            <circle cx="12" cy="12" r="3"/>
                            <path d="M12 1v6m0 6v6m4.22-13.22l4.24 4.24M1.54 9.96l4.24 4.24m12.44 0l4.24 4.24M1.54 14.04l4.24-4.24"/>
                        </svg>
                        Settings
                    </a>
</div>
                
                <div class="divider"></div>
                
                <div class="account-section" onclick="showAccountModal()">
                    <div class="avatar">U</div>
                    <div class="account-info">
                        <div class="account-name">User</div>
                        <div class="account-plan">Pro Plan</div>
                    </div>
                    <div class="badge">Pro</div>
                </div>
            </nav>
        `;
}
    
    // Add methods dynamically since shadow DOM doesn't allow direct access from parent
    connectedCallback() {
        setTimeout(() => {
            const navItems = this.shadowRoot.querySelectorAll('.nav-item');
            navItems.forEach(item => {
                item.addEventListener('click', function(e) {
                    if (this.getAttribute('href').startsWith('/')) {
                        e.preventDefault();
                        // Navigate to new page (SPA style)
                        window.history.pushState({}, '', this.getAttribute('href'));
                        updateActiveNavItem(this);
                    }
                });
            });
            
            const historyItems = this.shadowRoot.querySelectorAll('.history-item');
            historyItems.forEach(item => {
                item.addEventListener('click', function() {
                    loadChatHistory(this.textContent);
                });
            });
        }, 0);
    }
}

function updateActiveNavItem(activeItem) {
    document.querySelectorAll('custom-sidebar').forEach(sidebar => {
        const navItems = sidebar.shadowRoot.querySelectorAll('.nav-item');
        navItems.forEach(item => item.classList.remove('active'));
    });
    activeItem.classList.add('active');
}

function startNewChat() {
    clearChat();
}

function loadChatHistory(topic) {
    // Load specific chat history
    console.log('Loading chat history for:', topic);
}

function toggleMobileSidebar() {
    const sidebar = document.querySelector('custom-sidebar');
    if (sidebar) {
        sidebar.shadowRoot.querySelector('.sidebar').classList.toggle('active');
    }
}

customElements.define('custom-sidebar', CustomSidebar);